---
phase: 19
slug: app-registration-removal
status: draft
nyquist_compliant: false
wave_0_complete: false
created: 2026-04-09
---

# Phase 19 — Validation Strategy

> Per-phase validation contract for feedback sampling during execution.

---

## Test Infrastructure

| Property | Value |
|----------|-------|
| **Framework** | xUnit 2.9.3 |
| **Config file** | `SharepointToolbox.Tests/SharepointToolbox.Tests.csproj` |
| **Quick run command** | `dotnet test --filter "Category=Unit" --no-build` |
| **Full suite command** | `dotnet test --no-build` |
| **Estimated runtime** | ~15 seconds |

---

## Sampling Rate

- **After every task commit:** Run `dotnet test --filter "Category=Unit" --no-build`
- **After every plan wave:** Run `dotnet test --no-build`
- **Before `/gsd:verify-work`:** Full suite must be green
- **Max feedback latency:** 15 seconds

---

## Per-Task Verification Map

| Task ID | Plan | Wave | Requirement | Test Type | Automated Command | File Exists | Status |
|---------|------|------|-------------|-----------|-------------------|-------------|--------|
| 19-01-01 | 01 | 1 | APPREG-01 | unit | `dotnet test --filter "FullyQualifiedName~AppRegistrationServiceTests" --no-build` | :x: W0 | :white_large_square: pending |
| 19-01-02 | 01 | 1 | APPREG-02 | unit | `dotnet test --filter "FullyQualifiedName~AppRegistrationServiceTests" --no-build` | :x: W0 | :white_large_square: pending |
| 19-01-03 | 01 | 1 | APPREG-03 | unit (mock) | `dotnet test --filter "FullyQualifiedName~AppRegistrationServiceTests" --no-build` | :x: W0 | :white_large_square: pending |
| 19-01-04 | 01 | 1 | APPREG-04 | unit | `dotnet test --filter "FullyQualifiedName~AppRegistrationServiceTests" --no-build` | :x: W0 | :white_large_square: pending |
| 19-02-01 | 02 | 1 | APPREG-05 | unit (mock) | `dotnet test --filter "FullyQualifiedName~ProfileManagementViewModelRegistrationTests" --no-build` | :x: W0 | :white_large_square: pending |
| 19-02-02 | 02 | 1 | APPREG-06 | unit (mock) | `dotnet test --filter "FullyQualifiedName~AppRegistrationServiceTests" --no-build` | :x: W0 | :white_large_square: pending |

*Status: :white_large_square: pending · :white_check_mark: green · :x: red · :warning: flaky*

---

## Wave 0 Requirements

- [ ] `SharepointToolbox.Tests/Services/AppRegistrationServiceTests.cs` — stubs for APPREG-02, APPREG-03, APPREG-04, APPREG-06
- [ ] `SharepointToolbox.Tests/ViewModels/ProfileManagementViewModelRegistrationTests.cs` — stubs for APPREG-01, APPREG-05
- [ ] `SharepointToolbox/Services/IAppRegistrationService.cs` — interface stub
- [ ] `SharepointToolbox/Core/Models/AppRegistrationResult.cs` — result model stub

*Existing xUnit infrastructure covers test framework — no new packages needed.*

---

## Manual-Only Verifications

| Behavior | Requirement | Why Manual | Test Instructions |
|----------|-------------|------------|-------------------|
| Register App button visible in profile dialog | APPREG-01 | WPF UI rendering | Open profile create dialog, verify "Register App" button is present and enabled |
| Fallback instructions panel renders correctly | APPREG-04 | WPF UI rendering | Trigger non-admin path, verify step-by-step instructions display |
| Remove App button visible and functional | APPREG-05 | WPF UI rendering + live Entra | Open profile edit dialog for registered tenant, verify "Remove App" button |
| Re-authentication required after removal | APPREG-06 | Live MSAL session state | Remove app, attempt operation, verify login prompt appears |

---

## Validation Sign-Off

- [ ] All tasks have `<automated>` verify or Wave 0 dependencies
- [ ] Sampling continuity: no 3 consecutive tasks without automated verify
- [ ] Wave 0 covers all MISSING references
- [ ] No watch-mode flags
- [ ] Feedback latency < 15s
- [ ] `nyquist_compliant: true` set in frontmatter

**Approval:** pending